If you live in India, this is mandatory reading for you:

http://www.huffingtonpost.in/dr-julia-k-nunes/no-you-do-not-become-immune-to-air-pollution-yes-it-can-kill-you_a_23241219/

Please share widely. Also please read the second part http://www.huffingtonpost.in/dr-julia-k-nunes/tips-on-how-to-pick-and-optimise-the-use-of-air-sensors-air-purifiers-and-masks_a_23242184/

If you're one of those folks who have reached out to me this "season", asking for purifier or filter advice, do read the second part. Thanks.

Thanks @[600886361:2048:Bayiravi] for sharing. A very well put together and concise article.